ANTLR Mode Major mode that provides various features for editing ANTLR grammar files.

Bf.el A BrainFuck interpreter written in Emacs-Lisp. To demonstrate that the implementation is really working, a weird test-case is included: An interpreter written in BrainFuck compiled to Emacs-Lisp executing BrainFuck code.

CC Mode The development homepage of the Mode for editing C/C++ and other languages with similar syntax.

ECB A source code browser for Emacs. It is a global minor-mode which displays a couple of windows that can be used to browse directories, files and methods. It supports method parsing for Java, C, C++, Elisp. [Open source, GPL]

Java Development Environment A software package that turns Emacs into a comprehensive system for creating, editing, debugging, and documenting Java applications. Information about installing and using JDE, FAQ, package download and contributions.